Wheatley seems to have supposed that Wayneman Birch was the same person as the 'Will' (surname unknown) who served as Pepys's 'boy' in 1660-61 and was dismissed for theft. He may have been influenced by the fact that Jane and Wayneman had a brother named William, apparently older than Wayneman, who is first mentioned on 27 December 1662 and died in 1667.

(Correction of previous annotation) Wheatley seems to have supposed that Wayneman Birch was the same person as the 'Will' (surname unknown) who served as Pepys's 'boy' until his dismissal for theft on 5 September 1660. He may have been influenced by the fact that Jane and Wayneman had a brother named William, apparently older than Wayneman, who is first mentioned on 27 December 1662 and died in 1667.